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Convert A.U. of Length (a.u.) to Earth's Equatorial Radius (R⊕) instantly.

About these units

A.U. of Length (a.u.)

The atomic unit of length, also known as the Bohr radius unit in atomic units, is approximately 5.29177 × 10⁻¹¹ meters. It is defined as the radius of the lowest-energy orbital of the hydrogen atom, providing a natural scale for describing atomic and quantum mechanical systems. Atomic units were devised to simplify equations in quantum chemistry and atomic physics by normalizing fundamental constants such as electron charge, Planck's constant, and electron mass to 1. In this system, many equations become dimensionless and far easier to manipulate mathematically. The atomic unit of length is essential in molecular orbital calculations, quantum simulations, and the study of electron behavior in atoms and molecules. Its use reflects an approach to physics in which units are chosen to match the natural scales of the systems being studied.

Earth's Equatorial Radius (R⊕)

The Earth's equatorial radius is approximately 6,378.1 km. This distance represents the radius measured along the equator, where Earth's rotational bulge makes it slightly larger than the polar radius. Geodesists, cartographers, and astronomers use the equatorial radius for mapping, satellite positioning, and calculating gravitational effects. It is fundamental to defining the shape of the Earth as an oblate spheroid rather than a perfect sphere. Precise knowledge of R⊕ enables accurate navigation, climate modeling, and orbital calculations, forming the basis for modern geodesy and Earth observation systems.

More A.U. of Length converters

A.U. of Length [a.u.] ↔ Meter [m]
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A.U. of Length [a.u.] ↔ Kilometer [km]
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A.U. of Length [a.u.] ↔ Centimeter [cm]
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A.U. of Length [a.u.] ↔ Millimeter [mm]
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A.U. of Length [a.u.] ↔ Mile [mi]
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A.U. of Length [a.u.] ↔ Foot [ft]
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A.U. of Length [a.u.] ↔ Inch [in]
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A.U. of Length [a.u.] ↔ Yard [yd]
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A.U. of Length [a.u.] ↔ Nautical Mile [nmi]
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A.U. of Length [a.u.] ↔ Micrometer [µm]
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A.U. of Length [a.u.] ↔ Attometer [am]
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A.U. of Length [a.u.] ↔ Femtometer [fm]
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A.U. of Length [a.u.] ↔ Picometer [pm]
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A.U. of Length [a.u.] ↔ Nanometer [nm]
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A.U. of Length [a.u.] ↔ Decimeter [dm]
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A.U. of Length [a.u.] ↔ Dekameter [dam]
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A.U. of Length [a.u.] ↔ Hectometer [hm]
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A.U. of Length [a.u.] ↔ Megameter [Mm]
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A.U. of Length [a.u.] ↔ Gigameter [Gm]
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A.U. of Length [a.u.] ↔ Terameter [Tm]
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A.U. of Length [a.u.] ↔ Petameter [Pm]
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A.U. of Length [a.u.] ↔ Exameter [Em]
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A.U. of Length [a.u.] ↔ Mil [mil]
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A.U. of Length [a.u.] ↔ Hand [hand]
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A.U. of Length [a.u.] ↔ Fathom [fath]
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A.U. of Length [a.u.] ↔ Rod [rd]
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A.U. of Length [a.u.] ↔ Chain [ch]
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A.U. of Length [a.u.] ↔ Furlong [fur]
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A.U. of Length [a.u.] ↔ League [lea]
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A.U. of Length [a.u.] ↔ Nautical Mile (UK) [NM (UK)]
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A.U. of Length [a.u.] ↔ Nautical League (Int) [nl (int)]
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A.U. of Length [a.u.] ↔ Nautical League (UK) [nl (UK)]
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A.U. of Length [a.u.] ↔ Astronomical Unit [AU]
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A.U. of Length [a.u.] ↔ Light Year [ly]
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A.U. of Length [a.u.] ↔ Parsec [pc]
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A.U. of Length [a.u.] ↔ Kiloparsec [kpc]
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A.U. of Length [a.u.] ↔ Megaparsec [Mpc]
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A.U. of Length [a.u.] ↔ Angstrom [Å]
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A.U. of Length [a.u.] ↔ X-unit [X]
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A.U. of Length [a.u.] ↔ Planck Length [ℓₚ]
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A.U. of Length [a.u.] ↔ Electron Radius [re]
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A.U. of Length [a.u.] ↔ Bohr Radius [a₀]
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A.U. of Length [a.u.] ↔ Point [pt]
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A.U. of Length [a.u.] ↔ Pica [pica]
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A.U. of Length [a.u.] ↔ Twip [twip]
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A.U. of Length [a.u.] ↔ Aln [aln]
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A.U. of Length [a.u.] ↔ Famn [famn]
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A.U. of Length [a.u.] ↔ Caliber [cl]
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A.U. of Length [a.u.] ↔ Centiinch [cin]
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A.U. of Length [a.u.] ↔ Ken [ken]
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A.U. of Length [a.u.] ↔ Russian Archin [archin]
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A.U. of Length [a.u.] ↔ Roman Actus [actus]
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A.U. of Length [a.u.] ↔ Vara de Tarea [vara de tarea]
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A.U. of Length [a.u.] ↔ Vara Conuquera [vara conuquera]
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A.U. of Length [a.u.] ↔ Vara Castellana [vara castellana]
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A.U. of Length [a.u.] ↔ Cubit (Greek) [cubit (greek)]
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A.U. of Length [a.u.] ↔ Long Reed [long reed]
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A.U. of Length [a.u.] ↔ Reed [reed]
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A.U. of Length [a.u.] ↔ Long Cubit [long cubit]
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A.U. of Length [a.u.] ↔ Handbreadth [handbreadth]
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A.U. of Length [a.u.] ↔ Fingerbreadth [fingerbreadth]
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A.U. of Length [a.u.] ↔ Ell [ell]
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A.U. of Length [a.u.] ↔ Cubit (UK) [cubit (uk)]
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A.U. of Length [a.u.] ↔ Span (Cloth) [span]
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A.U. of Length [a.u.] ↔ Finger (Cloth) [finger]
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A.U. of Length [a.u.] ↔ Nail (Cloth) [nail]
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A.U. of Length [a.u.] ↔ Barleycorn [barleycorn]
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A.U. of Length [a.u.] ↔ Microinch [µin]
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A.U. of Length [a.u.] ↔ Arpent [arpent]
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A.U. of Length [a.u.] ↔ Kiloyard [kyd]
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A.U. of Length [a.u.] ↔ Foot (US Survey) [ft (US)]
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A.U. of Length [a.u.] ↔ Inch (US Survey) [in (US)]
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A.U. of Length [a.u.] ↔ Chain (US Survey) [ch (US)]
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A.U. of Length [a.u.] ↔ Furlong (US Survey) [fur (US)]
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A.U. of Length [a.u.] ↔ Rod (US Survey) [rd (US)]
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A.U. of Length [a.u.] ↔ Fathom (US Survey) [fath (US)]
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A.U. of Length [a.u.] ↔ Mile (US Survey) [mi (US)]
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A.U. of Length [a.u.] ↔ League (Statute) [st.league]
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A.U. of Length [a.u.] ↔ Mile (Roman) [mi (Roman)]
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A.U. of Length [a.u.] ↔ Earth's Equatorial Radius [R⊕]
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A.U. of Length [a.u.] ↔ Earth's Polar Radius [R⊕ (p)]
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A.U. of Length [a.u.] ↔ Earth's Distance from Sun [AU (es)]
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A.U. of Length [a.u.] ↔ Sun's Radius [R☉]
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Convert A.U. of Length to Earth's Equatorial Radius